Second quarter: Oregon 21, Arizona State 17

What happened: The Ducks continued make costly mistakes but took the halftime lead thanks to a Cliff Harris interception.

The big play: After a personal foul on center Hroniss Grasu led to a UO punt, the Sun Devils were driving before Brock Osweiler overthrew a receiver and Harris intercepted it in the end zone, returning it to midfield.

Momentum swing: The Ducks had tied the game and got the ball back midway through the half, but Darron Thomas threw an interception that set up an ASU field goal.

Beyond the boxscore: Emotional Arizona State linebacker Vontaze Burfict was flagged for two personal foul penalties in the first half.